CN207598618U - A kind of lightweight hydraulic cylinder of carbon fibre composite enhancing - Google Patents
A kind of lightweight hydraulic cylinder of carbon fibre composite enhancing Download PDFInfo
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- CN207598618U CN207598618U CN201720555191.7U CN201720555191U CN207598618U CN 207598618 U CN207598618 U CN 207598618U CN 201720555191 U CN201720555191 U CN 201720555191U CN 207598618 U CN207598618 U CN 207598618U
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- cylinder
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- fibre composite
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Abstract
The utility model discloses a kind of lightweight hydraulic cylinders of carbon fibre composite enhancing, including the hydraulic cylinder being connected to form respectively with cylinder bottom and cylinder cap by cylinder barrel both ends, equipped with piston and the piston rod being connected with piston in cylinder barrel, it is stretched out outside hydraulic cylinder in the hole that piston rod one end is set from cylinder cap, the hole inner wall and piston of piston rod and cylinder cap are equipped with dynamic sealing with inner wall of cylinder, the first hydraulic fluid port and the second hydraulic fluid port being connected with hydraulic oil system are respectively equipped on cylinder bottom and cylinder cap, the piston both sides in cylinder barrel is driven to slide by hydraulic oil；The cylinder barrel is made of metal inner lining in outer surface covering carbon fibre composite enhancement layer, the carbon fibre composite enhancement layer is to be made of wet winding technology technique of intensity the carbon fibre material of more than 3500MPa is reinforcing material, thermosetting resin is matrix.The apparatus structure is simple, its is light-weight while with intensity, rigidity, anti-fatigue performance, available for fields such as engineering machinery, space flight and aviation, auto industrys.
Description
Technical field
The utility model is related to a kind of hydraulic cylinders, and in particular to a kind of lightweight hydraulic pressure of carbon fibre composite enhancing
Cylinder.
Background technology
At present, hydraulic technique forward direction high pressure, high speed, high reliability, highly integrated direction are grown rapidly.The section of engineering machinery
Energyization, lightweight develop so that it needs lighter more reliable Hydraulic Elements；In aircraft and aerospace field, hydraulic system and
Element must have the characteristics of light-weight, high intensity；Light-weight design in auto industry becomes the effective of automotive energy-saving emission-reducing
Approach, and the light-weight design of Hydraulic Elements is its important part.Hydraulic cylinder performs member as important in hydraulic system
Part, lightweight are imperative.Tradition using metal material manufacture hydraulic cylinder in order to meet intensity, rigidity, fatigue resistance and
The requirements such as safety, it is necessary to improve safety coefficient, allow for that hydraulic cylinder weight is big, over-designed expends material in this way.Realize liquid
Cylinder pressure lightweight is to carry out product structure optimization on the basis of conditions researching is fully carried out first, secondly high-strength low-density
The development and application of new material.
In numerous lightweighting materials, carbon fibre composite has excellent comprehensive mechanical property：Specific strength（Intensity
The ratio between with density）, specific modulus（The ratio between modulus and density）With than energy-absorbing（Effectively destroy the energy that unit mass absorbs in length）
Height, tensile strength generally in more than 3500MPa, tensile modulus of elasticity 23000-43000MPa, etc. rigidity or equal strength set
It counts under principle, carbon fiber composite structure is than more than 50% mild steel structural weight reduction, than magnesium/aluminium alloy structure loss of weight up to 30%；
Meanwhile carbon fibre composite has good anti-fatigue performance, corrosion resistance, part service life is high, therefore, by carbon fiber
Material is applied in hydraulic cylinder, can not only reach lightweight purpose, can also obtain better performance.
There is a small amount of company to manufacture hydraulic cylinder using carbon fibre composite at present.For example, it is sent in Hanover's exhibition in 2015
The carbon fiber hydraulic cylinder of gram company displaying, domestic Han Chen hydraulic pressure company also proposed similar carbon fiber hydraulic cylinder.In composite wood
Material connect them with metal material mostly using schemes such as cementing, screw, pins.There are degumming hidden danger not enough may be used for cementing scheme
It leans on, and inconvenient detachable maintaining；Screw, pin connection scheme be easy to cause the destruction of composite layer.Lightweight can make liquid
Cylinder pressure has a lower energy consumption, saves power, improves economy, hydraulic product is made to meet energy-saving and environment-friendly requirement, engineering machinery,
There is huge application potential in the fields such as aerospace, auto industry.
Utility model content
Technical problem to be solved in the utility model is：It proposes a kind of carbon fibre composite enhancing hydraulic cylinder, is used for
Meet the requirements such as lightweight needs and higher and higher intensity, rigidity, fatigue resistance, the safety of hydraulic cylinder.This carbon fiber
Composite material enhance hydraulic cylinder with respect to conventional cylinder for, it is simple in structure, be readily disassembled repair, possess higher intensity, firm
Degree, anti-fatigue performance, while its weight can mitigate 30% or so, which can use as the executive component of hydraulic system
In fields such as engineering machinery, space flight and aviation, auto industrys.
The technical solution that the utility model solves above-mentioned technical problem is as follows：
A kind of lightweight hydraulic cylinder of carbon fibre composite enhancing, including by cylinder barrel both ends respectively with cylinder bottom and cylinder cap phase
The even hydraulic cylinder of composition, it is characterised in that：Equipped with piston and the piston rod being connected with piston, the piston rod one in the cylinder barrel
It holds in the hole set from cylinder cap and stretches out outside hydraulic cylinder, the hole inner wall and piston of piston rod and cylinder cap are equipped with inner wall of cylinder
Be respectively equipped with the first hydraulic fluid port and the second hydraulic fluid port on dynamic sealing, cylinder bottom and cylinder cap, first hydraulic fluid port and the second hydraulic fluid port respectively with liquid
Compressed-oil system is connected, and the piston both sides in cylinder barrel is driven to slide by hydraulic oil；The cylinder barrel is covered by metal inner lining in outer surface
Lid carbon fibre composite enhancement layer forms.
As an improvement, the cylinder bottom is equipped with buffering confined space, piston is equipped with close to cylinder bottom side with buffering confined space
The cushion collar of cooperation.
As an improvement, the metal inner lining is the thin-walled cylinder thickeied inside a kind of both ends, thin-walled cylinder and cylinder cap and cylinder
Bottom is connected through a screw thread, and the screw thread is the fine thread of 6 class precisions；The metal inner lining interlude inner wall is carried out at surface
Reason, makes its surface roughness roughness Ra value between 0.1 to 0.4.
As an improvement, the metal inner lining interlude inner wall surface processing mode is：First in metal inner lining interlude inner wall
Chrome-faced, thickness of coating are 30 to 40 μm, honing or polishing after chromium plating.
As an improvement, before cylinder cap and cylinder bottom are tightened with thin-walled cylinder thread fitting, happy safe adhesive is added on screw thread,
Reliability is threadedly coupled to improve.
As an improvement, the carbon fibre composite enhancement layer outer surface of the cylinder barrel sprays one layer of aromatic polyester fibres material
As protective coating.
As an improvement, the piston rod surface passes through chromium plating process, 15 to 25 μm of thickness of coating；Piston is connect with piston rod
Using H9 grades of cooperations, the surface roughness Ra of piston rod is 0.63 to 2.5 μm in aperture；The cushion collar and piston that piston passes through both sides
Bar is fixed.
The utility model has had the advantage that compared with prior art：
First, the cylinder assembly of the hydraulic cylinder has used the carbon fibre composite of high intensity, intensity, rigidity,
It is more much higher than existing all-metal hydraulic cylinder on anti-fatigue performance；
Second, it is light-weight, the lightweight requirements in the fields such as engineering machinery, aerospace, auto industry can be met；
Third has lower energy consumption, saves power, improves economy, and hydraulic product is made more preferably to meet energy-saving and environment-friendly want
It asks；Fourth, since carbon fibre composite has good corrosion resistance, make it that can be used under severe operating mode.
Description of the drawings
Fig. 1 is the hydraulic cylinder structure schematic diagram of the utility model lightweight enhancing.
Fig. 2 is metal inner lining structure diagram.
In figure:1- cylinder bottoms, the first hydraulic fluid ports of 2-, 3- metal inner linings, 4- carbon fibre composite enhancement layers, cushion collar after 5-,
6- pistons, 7- dynamic sealings one, cushion collar before 8-, 9- piston rods, 10- cylinder caps, the second hydraulic fluid ports of 11-, 12- dynamic sealings two.
Specific embodiment
In order to which those skilled in the art scholar is allowed to more fully understand the utility model, the tool of the utility model is described below
It body embodiment and is described further with reference to attached drawing.
As shown in Figure 1, a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing, including by cylinder barrel both ends respectively with cylinder
The hydraulic cylinder that bottom 1 and cylinder cap 10 are connected to form, the cylinder barrel are interior equipped with piston 6 and the piston rod 9 being connected with piston 6, the work
Stretched out outside hydraulic cylinder in the hole that 9 one end of stopper rod is set from cylinder cap 10, the hole inner wall and piston 6 of piston rod 9 and cylinder cap 10 with
Inner wall of cylinder is equipped with dynamic sealing, and the first hydraulic fluid port 2 and the second hydraulic fluid port 11, first oil are respectively equipped on cylinder bottom 1 and cylinder cap 10
2 and second hydraulic fluid port 11 of mouth is connected respectively with hydraulic oil system, passes through hydraulic oil and 6 both sides of piston in cylinder barrel is driven to slide；It is described
Cylinder barrel is made of metal inner lining 3 in outer surface covering carbon fibre composite enhancement layer 4, the carbon fibre composite enhancement layer
4 be by intensity the carbon fibre material of more than 3500MPa is reinforcing material, thermosetting resin is matrix, using Wet Winding Process into
Type technique is made.The cylinder bottom 1, cylinder cap 10, piston 6, cushion collar are made of high-strength aluminum alloy of the intensity more than 500MPa,
The material of the metal inner lining 3 is 45# steel, and the material of the piston rod 9 is hard chromium-plated steel.Dynamic sealing on the piston 6
1 and piston rod 9 on dynamic sealing 2 12 select corresponding standard component according to national standard.
The carbon fibre material is carbon fibre precursor, carbon fiber unidirectional cloth and carbon fiber narrowband cloth, the carbon fiber are compound
The wet therapy forming process of Material reinforcement layer 4 refers to based on carbon fibre precursor, supplemented by carbon fiber unidirectional cloth, carbon fiber narrowband cloth
Winding process；Specially：Carbon fibre precursor, carbon fiber unidirectional cloth and carbon fiber narrowband cloth are first carried out using thermosetting resin
Then impregnation is wound under tension force on the metal inner lining 3 as core model, last cured demoulding obtains cylinder barrel.
In the wet therapy forming process, the canoe of carbon fibre material is after impregnation：The bottom on metal inner lining 3
It is wound using carbon fiber unidirectional cloth, middle layer is wound using carbon fibre precursor, and outermost layer is wound using carbon fiber narrowband cloth；Most
The carbon fiber unidirectional cloth winding layer of bottom is wound using internal layer without pretightning force, and winding angle is 0 °；It is former to the carbon fiber of middle layer
Silk winding layer applies pretightning force, and winding angle is 45 ° to 90 °；Outermost carbon fiber narrowband cloth winding layer is using no pretightning force
Winding, winding angle are 90 °；It is heating and curing after the completion of winding by 130 to 140 DEG C, carbon fibre composite enhances after demoulding
Layer 4 and metal inner lining 3 are tightly bonded together.
The cylinder bottom 1 is equipped with buffering confined space, and piston 6 is equipped with and buffering confined space cooperation close to 1 side of cylinder bottom
Cushion collar 5 afterwards.
The metal inner lining 3 is the thin-walled cylinder thickeied inside a kind of both ends, and thin-walled cylinder and cylinder cap 10 and cylinder bottom 1 are logical
Threaded connection is crossed, the screw thread is the fine thread of 6 class precisions；The 3 interlude inner wall of metal inner lining is surface-treated, and is made
Its surface roughness roughness Ra value is between 0.1 to 0.4；The 3 interlude inner wall surface processing mode of metal inner lining is：First
In 3 interlude inner wall surface chromium plating of metal inner lining, thickness of coating is 30 to 40 μm, honing or polishing after chromium plating.
Before cylinder cap 10 and cylinder bottom 1 are tightened with thin-walled cylinder thread fitting, happy safe adhesive is added on screw thread, to improve
It is threadedly coupled reliability.
The thermosetting resin is compound in carbon fiber using phenolic resin or epoxy resin M03 adhesives, thermosetting resin
Ratio in Material reinforcement layer 4 is more than 20%.
4 outer surface of carbon fibre composite enhancement layer of the cylinder barrel sprays one layer of aromatic polyester fibres material as protection
Coating.
Chromium plating process, 15 to 25 μm of thickness of coating are passed through in 9 surface of piston rod；Piston 6 connect aperture with piston rod 9 and adopts
With H9 grades of cooperations, the surface roughness Ra of piston rod 9 is 0.63 to 2.5 μm；Piston 6 passes through the preceding cushion collar 8 of both sides, afterwards buffering
Set 5 is fixed with piston rod 9.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of the utility model technical principle is not departed from, several modifications can be made, improves, replace, these are repaiied
Change, improve, replacing and also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing, including being connected respectively with cylinder bottom and cylinder cap by cylinder barrel both ends
The hydraulic cylinder of composition, it is characterised in that：Equipped with piston and the piston rod being connected with piston, described piston rod one end in the cylinder barrel
It is stretched out outside hydraulic cylinder in the hole set from cylinder cap, the hole inner wall and piston of piston rod and cylinder cap are equipped with dynamic with inner wall of cylinder
Sealing, is respectively equipped with the first hydraulic fluid port and the second hydraulic fluid port on cylinder bottom and cylinder cap, first hydraulic fluid port and the second hydraulic fluid port respectively with hydraulic pressure
Oil system is connected, and the piston both sides in cylinder barrel is driven to slide by hydraulic oil；The cylinder barrel is covered by metal inner lining in outer surface
Carbon fibre composite enhancement layer forms.
2. a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing according to claim 1, it is characterised in that：The cylinder
Bottom is equipped with buffering confined space, and piston is equipped with the cushion collar with buffering confined space cooperation close to cylinder bottom side.
3. a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing according to claim 1, it is characterised in that：The gold
It is the thin-walled cylinder thickeied inside a kind of both ends to belong to liner, and thin-walled cylinder is connected through a screw thread with cylinder cap and cylinder bottom, the spiral shell
Line is the fine thread of 6 class precisions；The metal inner lining interlude inner wall is surface-treated, and makes its surface roughness roughness
Ra values are between 0.1 to 0.4.
4. a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing according to claim 3, it is characterised in that：In cylinder cap
Before being tightened with cylinder bottom and thin-walled cylinder thread fitting, happy safe adhesive is added on screw thread, to improve threaded connection reliability.
5. a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing, feature according to Claims 1-4 any one
It is：The carbon fibre composite enhancement layer outer surface of the cylinder barrel sprays one layer of aromatic polyester fibres material and is applied as protection
Layer.
6. a kind of lightweight hydraulic cylinder of carbon fibre composite enhancing, feature according to Claims 1-4 any one
It is：The piston rod surface passes through chromium plating process, 15 to 25 μm of thickness of coating；Piston uses H9 grades with piston lever attachment hole diameter
Cooperation, the surface roughness Ra of piston rod is 0.63 to 2.5 μm；Piston is fixed by the cushion collar of both sides with piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720555191.7U CN207598618U (en) | 2017-05-18 | 2017-05-18 | A kind of lightweight hydraulic cylinder of carbon fibre composite enhancing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720555191.7U CN207598618U (en) | 2017-05-18 | 2017-05-18 | A kind of lightweight hydraulic cylinder of carbon fibre composite enhancing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598618U true CN207598618U (en) | 2018-07-10 |
Family
ID=62752243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720555191.7U Expired - Fee Related CN207598618U (en) | 2017-05-18 | 2017-05-18 | A kind of lightweight hydraulic cylinder of carbon fibre composite enhancing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598618U (en) |
-
2017
- 2017-05-18 CN CN201720555191.7U patent/CN207598618U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20190518 |